Carel NTC*HP* Series - Models NTC*WS

11
rel. 2.7 - 16.11.2018
ENG
"Passive probes" +030220658 -
2.8 Models NTC*WS*
Storage conditions -40T105 °C
Operating range -40T105 °C
Connections Terminating pins on the cable
Sensor R(25 °C)= 10 kOhm 1%; Beta 3435
Precision +/- 0.5 °C at 25°C; +/- 1.0 °C from -50T90 °C
Dissipation factor (in air) 3 mW
Thermal constant over time (in air) approx. 50 s
Cable Black, thermoplastic rubber cable with black-white wires, cross-section 2x0.25 mm
2
diam. 3.3mm
Sensitive element index of protection IP67
Sensitive element housing Copper cap - dimensions 4x16 mm ±1.5% with polyurethane resin packing
Cable tie tension Typical 250N (position 6 on the tool); Maximum 260N (position 7 on the tool);
Classification according to protection against
electric shock (sensitive element and cable)
Basic insulation for 250 Vac
Category of resistance to heat and fire UL/HB cable
Insulation resistance at 500 Vdc >20 MOhm 500 Vdc
Dielectric rigidity 1500 Vac
Tab. 2.g
Punto di contatto in rame
Fig. 2.n Fig. 2.o
* = see table of product codes in price list
Cable tie tension and cut-off tool with tension adjustment (Carel P/N CM00000006)
Tool for tightening the cable tie at a constant set tension to ensure continuous contact between the sensor and the
surface of the pipe.
Cable tie tension can be adjusted simply using the screw at the base of the handle, which moves the index on a scale
from 1 to 8. The corresponding force applied is shown in the following table:
Tool
1 2 3 4 567 8
Low Medium High Tollerance
MK6 135 160 180 235 250 250 260 290 ± 2
Tab. 1.a
The values are expressed in newtons (N)
Fig. 2.p
NTC*WS sensor assembly instructions using the cable tie tension tool
1) Wrap the cable tie around the pipe and secure it; 2) On the cable tie tension tool (P/N CM00000006) set
the tension to 250N (position 6 on the index);
3) Use the tool to tighten and then cut the cable
tie;
4) Wrap the electrical cable twice around the pipe; 5) Cover the sensor with thermal insulation for at least
10 cm around the end of the cap and the wound cable;